Oil Cooled Servo Stabilizer (3kva-1000kva)

The company projects itself of having sophisticated machinery and R&D Lab with modernised machines evolving new innovative techniques to breed apart.

Leveraging on the rich industry experience, we have been able to provide the customers with an astounding assortment of Air Cooled Stabilizer. Specifically designed for providing a constant output voltage for single and three phase applications, the range is widely appreciated for efficiency, excellent performance and shock resistance. The offered range is ideally used to stabilize AC voltage in electrical & electronic equipment, motor lab equipment, medical equipment, CNC machines and other costlier appliances.

We are offering oil cooled servo stabilizers with following specifications:

Salient Features :

  High efficiency & Fast response.
  Wide input voltage range & Audiable alarm for trip conditions.
  99.99% failure proof control circuit.
  No over under, shoots and hunting.
  Built in bypass switch upto 100 Kva.
  Less active component avoids failure ratings.
  Special electronic circuit to operate on gensets.
  No effect of power factor and frequency variations.
  Single PCB for three phase sensing and correction.
  Voltage at speed related to rate of fluctuations and avoids oscillations & hunting In dc motor drive.
  Variable speed high torque dc servo motor proportionally controls corrections.
  Rugged and smooth ac motor drive control through optoisolator circuit which is Highly reliable.
  Separate isolated PCB for triac switching for motor.

High Reliablity :

  High reliability due to digital and controlling using micro controller
  All components sourcedfrom reputed manufacturers, confirm to IS/BS/VDU standards
  All raw material inspection as per internal components manual
  Individual assemblies tested on full load at 55 deg c in oven for 48 hours to minimize failure
  Final equipment tested for accelerated life test to identify and replace any weak links.


  Input and Output Low Voltage protections.
  Input and Output High Voltage protections.
  Phase rotation/single phasing preventer.
  Input protection using HRC fuse.
  Control circuit protection using fast blow fuse.
  Electronic overload protection.

LCD Specifications:

  16*4 lcd display is used for easy reading of parameters.
  True rms sensing and reading of voltage and current.
  100 event error log facilities for easy diagnosation of fault level.
  Internal variable timer is adopted for on time delay and overload trip of scvs.
  Selectable phase reverse function.
  Selectable auto on function.
  Less analog circuit and hence failure rate is reduced.
  Built in digital meter for monitoring the voltage / current & frequency.
  Separate isolated PCB for triac switching for motor.

Product Specifications:

Single phase capacity 1 to 25 kva
Three phase (air cooled) 3 to 150 kva
Three Phase (oil cooled) 3 to 2000 kva
Input voltage range 170-270 Single phase 295-465 volts three phase
195-270 Single phase 340-465 volts three phase
205-270 single phase 360-465 volts three phase
Special range As per customer requirements
Output voltage 220/230/240 V AC in single phase
380/400/415 V AC in three phase
System Unbalanced/balanced type
Connection Star/Delta or Star/Star
Output Voltage regulation (+/-) 1% from no load to full load
Servo motor drive model -A AC Servo Synchronous Motor - Small
Correction speed 35 V/sec-1 ph, 60 V/sec-3 ph
Response time Above 60 milli. sec.
Servo motor model-B DC servo motor
Correction speed Upto 105 V/sec.
Response time 10 milli.sec.
Operating frequency 47 to 53 HZ
Output waveform True reproduction of input
Insulation Class "B"
Short circuit percentage and period 300 % for 250 milli sec.
Overload capacity 120 % for 1 minute
Effect of load P.F on OP Volts Nil
Waveform distortion Nil
Duty Cycle 100 % continuous
Ambient Upto 45c max above ambient Relative humidity upto 90%
System construction As per IS:9815
Enclosure Powder coated
Efficiency Better than 98% (electrical consumption saved)
Environment Designed for indoor / outdoor tropical use
Mounting On wheels
Earthing Earthing terminals provided


Cooling Air cooled / Oil cooled
Capacity 1Kva to 1000Kva
Input voltage 140-270v / 170-270v 1Phase AC ,
240-460v / 295-465v / 340-460v ,
360-460v / 340-480vv 3Phase AC
Output voltage 230v / 240 (+/_) 1% 1phase AC
380 / 400v / 415 (+/_) 1% 3phase AC
System-connections 4 wire, RYBA, star
Operating frequency 47-53HZ
Output voltage adjustable 380v to 415 v AC in 3Phase
220 to 240v AC in 1Phase
Output voltage regulation (+/_) 1% (any load)
Correction rate 35v/sec-1Phase
60v / sec-3Phase
Insulation class ‘ f ’ (Transformers)
Operating Temperature 0 ℃ to 50 ℃
Humidity up to 95 % RH max
Conforms to IS 9815-1994
Transformer oil IS 335, IEC 296